// static
void LLWinDebug::initExceptionHandler(LPTOP_LEVEL_EXCEPTION_FILTER filter_func)
{
static bool s_first_run = true;
// Load the dbghelp dll now, instead of waiting for the crash.
// Less potential for stack mangling
if (s_first_run)
{
// First, try loading from the directory that the app resides in.
std::string local_dll_name = gDirUtilp->findFile("dbghelp.dll", gDirUtilp->getWorkingDir(), gDirUtilp->getExecutableDir());
HMODULE hDll = NULL;
hDll = LoadLibraryA(local_dll_name.c_str());
if (!hDll)
{
hDll = LoadLibrary(L"dbghelp.dll");
}
if (!hDll)
{
LL_WARNS("AppInit") << "Couldn't find dbghelp.dll!" << LL_ENDL;
}
else
{
f_mdwp = (MINIDUMPWRITEDUMP) GetProcAddress(hDll, "MiniDumpWriteDump");
if (!f_mdwp)
{
FreeLibrary(hDll);
hDll = NULL;
}
}
gEmergencyMemoryReserve.reserve();
s_first_run = false;
}
// Try to get Tool Help library functions.
HMODULE hKernel32;
hKernel32 = GetModuleHandle(_T("KERNEL32"));
CreateToolhelp32Snapshot_ = (CREATE_TOOL_HELP32_SNAPSHOT)GetProcAddress(hKernel32, "CreateToolhelp32Snapshot");
Module32First_ = (MODULE32_FIRST)GetProcAddress(hKernel32, "Module32FirstW");
Module32Next_ = (MODULE32_NEST)GetProcAddress(hKernel32, "Module32NextW");
LPTOP_LEVEL_EXCEPTION_FILTER prev_filter;
prev_filter = SetUnhandledExceptionFilter(filter_func);
// *REMOVE:Mani
//PreventSetUnhandledExceptionFilter();
if(prev_filter != gFilterFunc)
{
LL_WARNS("AppInit")
<< "Replacing unknown exception (" << (void *)prev_filter << ") with (" << (void *)filter_func << ") !" << LL_ENDL;
}
gFilterFunc = filter_func;
}
// static
void LLWinDebug::generateMinidump(struct _EXCEPTION_POINTERS *exception_infop)
{
std::string dump_path = gDirUtilp->getExpandedFilename(LL_PATH_LOGS,
"SecondLifeException");
if (exception_infop)
{
// Since there is exception info... Release the hounds.
gEmergencyMemoryReserve.release();
_MINIDUMP_EXCEPTION_INFORMATION ExInfo;
ExInfo.ThreadId = ::GetCurrentThreadId();
ExInfo.ExceptionPointers = exception_infop;
ExInfo.ClientPointers = NULL;
writeDumpToFile((MINIDUMP_TYPE)(MiniDumpWithDataSegs | MiniDumpWithIndirectlyReferencedMemory), &ExInfo, "SecondLife.dmp");
}
}
// static
void LLWinDebug::init()
{
static bool s_first_run = true;
// Load the dbghelp dll now, instead of waiting for the crash.
// Less potential for stack mangling
// Don't install vectored exception handler if being debugged.
if(IsDebuggerPresent()) return;
if (s_first_run)
{
// First, try loading from the directory that the app resides in.
std::string local_dll_name = gDirUtilp->findFile("dbghelp.dll", gDirUtilp->getWorkingDir(), gDirUtilp->getExecutableDir());
HMODULE hDll = NULL;
hDll = LoadLibraryA(local_dll_name.c_str());
if (!hDll)
{
hDll = LoadLibrary(L"dbghelp.dll");
}
if (!hDll)
{
LL_WARNS("AppInit") << "Couldn't find dbghelp.dll!" << LL_ENDL;
}
else
{
f_mdwp = (MINIDUMPWRITEDUMP) GetProcAddress(hDll, "MiniDumpWriteDump");
if (!f_mdwp)
{
FreeLibrary(hDll);
hDll = NULL;
}
}
gEmergencyMemoryReserve.reserve();
s_first_run = false;
// Add this exeption hanlder to save windows style minidump.
AddVectoredExceptionHandler(0, &vectoredHandler);
}
}
void LLWinDebug::cleanup ()
{
gEmergencyMemoryReserve.release();
}
// static
void LLWinDebug::generateCrashStacks(struct _EXCEPTION_POINTERS *exception_infop)
{
// *NOTE:Mani - This method is no longer the exception handler.
// Its called from viewer_windows_exception_handler() and other places.
//
// Let go of a bunch of reserved memory to give library calls etc
// a chance to execute normally in the case that we ran out of
// memory.
//
LLSD info;
std::string dump_path = gDirUtilp->getExpandedFilename(LL_PATH_LOGS,
"PhoenixViewerException");
std::string log_path = dump_path + ".log";
if (exception_infop)
{
// Since there is exception info... Release the hounds.
gEmergencyMemoryReserve.release();
if(gSavedSettings.getControl("SaveMinidump").notNull() && gSavedSettings.getBOOL("SaveMinidump"))
{
_MINIDUMP_EXCEPTION_INFORMATION ExInfo;
ExInfo.ThreadId = ::GetCurrentThreadId();
ExInfo.ExceptionPointers = exception_infop;
ExInfo.ClientPointers = NULL;
writeDumpToFile(MiniDumpNormal, &ExInfo, "PhoenixViewer.dmp");
writeDumpToFile((MINIDUMP_TYPE)(MiniDumpWithDataSegs | MiniDumpWithIndirectlyReferencedMemory), &ExInfo, "PhoenixViewerPlus.dmp");
}
info = Get_Exception_Info(exception_infop);
}
LLSD threads;
std::vector<DWORD> thread_ids;
GetProcessThreadIDs(GetCurrentProcessId(), thread_ids);
for(std::vector<DWORD>::iterator th_itr = thread_ids.begin();
th_itr != thread_ids.end();
++th_itr)
{
LLSD thread_info;
if(*th_itr != GetCurrentThreadId())
{
GetThreadCallStack(*th_itr, thread_info);
}
if(thread_info)
{
threads[llformat("ID %d", *th_itr)] = thread_info;
}
}
info["Threads"] = threads;
llofstream out_file(log_path);
LLSDSerialize::toPrettyXML(info, out_file);
out_file.close();
}
